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Our Clinicians

Associate Professor Josephine Grace

Dr Josephine Grace is a Gastroenterologist and Hepatologist at the Austin Hospital. She emigrated from the UK to Australia in 2004 and has over 20 years of experience in general medicine and gastroenterology with specialist qualifications in both countries. She also holds a PhD in liver disease, completed at the University of Melbourne, and has been granted awards for her research from the Gastroenterology Society of Australia and the National Health and Medical Research Council of Australia. She regularly presents at local and international gastroenterology and hepatology conferences and has publications in top ranking journals.

Josephine has a particular interest in liver disease, viral hepatitis, coeliac disease and functional bowel disease including irritable bowel syndrome, and is happy to consult on a broad range of gastroenterology and hepatology disorders. She also welcomes open access referrals for gastroscopy or colonoscopy, which she performs at Warringal Hospital or at The Victorian Gut Centre in Bundoora. She is available to discuss patients with GPs and other specialists by telephone and can usually accommodate urgent patients at short notice

Associate Professor Adam Testro

Dr Adam Testro is a staff specialist gastroenterologist at Austin Health and The Victorian Liver Transplant Unit. Adam graduated with honours from The University of Melbourne School of Medicine in 1999. He was trained at both St Vincent’s Hospital and Austin Health. Following completion of his gastroenterology training he undertook a PhD in liver transplantation immunology, for which he was awarded a GESA Postgraduate Clinical Research Scholarship. In 2009 Adam was fortunate enough to take up a position at the world renowned Thomas E Starzl Transplantation Institute in Pittsburgh, USA where he received further training in Intestinal and multivisceral transplantation, and forged strong international collaborations. In 2010 he became Head of Intestinal Rehabilitation and Transplantation at Austin Health, the only centre in Australia currently undertaking intestinal transplantation. Adam continues to participate in clinical research and is involved in a number of NHMRC funded projects. He regularly presents his research findings at national and international conferences, and has numerous publications.

Adam is available to consult in all aspects of gastroenterology, including endoscopy, colonoscopy and capsule endoscopy. As with the other specialists at Gastrocare, he will endeavour to see new consultations with minimal delay, and facilitate their care in an efficient yet relaxed manner.

Associate Professor Rhys Vaughan

Dr Vaughan is a senior gastroenterologist at the Austin Hospital where he holds the position of Director of Endoscopy and Medical Director of Surgery, Anaesthesia and Procedural Medicine.  He is an Associate Professor at the University of Melbourne.  Rhys’ early training was in hepatology, obtaining a PhD exploring the alterations in vascular physiology in advanced cirrhosis, work which was undertaken at the Baker Medical Research Institute, University of Melbourne and Austin Hospital. He subsequently developed and expanded on his skills in interventional endoscopy before completing an advanced endoscopic fellowship in the USA at the Medical University of South Carolina with a particular focus on endoscopic ultrasound. Rhys’ current research interests include training, pancreatic cancer screening, advanced endoscopic interventions & endoscopic management of liver transplant patients.

Dr Ola Niewiadomski

Dr Ola Niewiadomski is a gastroenterologist who combines private practice with a senior medical specialist appointment at a major public hospital (Eastern Health).  Ola studied Medicine at Monash University, graduating with honours in 2004. After finishing her Gastroenterology training in Melbourne, she completed a fellowship in Inflammatory Bowel Disease (IBD) at St Vincent’s hospital along with postgraduate degree (PhD) through the University of Melbourne. Ola was granted the Australian Postgraduate Award, as well as an international award (ECCO Young Investigator Award) for her research, and has published in local and international journals.  She maintains a clinical and research interest in Crohn’s and Ulcerative colitis (IBD) and is the Principal Investigator for pharmaceutical clinical trials at Eastern Health. Ola also holds an Adjunct Senior Lecturer position at Monash University. She retains a broad range of interests in all areas of gastroenterology including inflammatory bowel disease, bowel cancer surveillance, irritable bowel syndrome, reflux disease, eosinophilic oesophagitis, nutrition, hepatology, endoscopy, colonoscopy and capsule endoscopy.

Dr Matt Choy

Dr Matthew Choy is a Consultant Gastroenterologist at Austin Hospital and works in private practice in north east Melbourne. Matthew consults in all aspects of gastroenterology and has a special interest in inflammatory bowel disease (IBD) and interventional luminal endoscopy (gastroscopy, colonoscopy, capsule endoscopy and small bowel balloon enteroscopy). He performs procedures at Warringal Hospital and Victorian Day Procedures Centre in Heidelberg. 


Matthew graduated in medicine from the University of Melbourne and trained in gastroenterology at St Vincent’s Hospital (Melbourne) and Monash Health.  Matthew was an IBD research fellow at both Austin and St Vincent’s Hospital and completed a PhD in Ulcerative Colitis at the University of Melbourne (Austin Health). He was subsequently awarded the Gastroenterology Society of Australia/Olympus Advanced Endoscopy Fellowship and undertook further subspeciality training at the Wolfson Unit for Endoscopy at St Mark’s Hospital in London, focusing on cancer surveillance and endoscopic management of IBD (dysplasia and strictures), complex colonic polyp resection, small bowel capsule and balloon enteroscopy, and endoscopy training and quality. 


At Austin Health, Matthew consults in the multidisciplinary IBD clinics, provides luminal endoscopy services and acute inpatient gastroenterology care. He is involved in local policy development, quality improvement initiatives and enjoys teaching medical students and specialist trainees. Matthew holds a Senior Research Fellow appointment at the University of Melbourne and is actively involved in IBD and endoscopy research and IBD clinical trials. 

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